Packaging 26.1 out! Another huge release, with lots of great stuff, like pyemscripten wheels, free-threading stable ABI, dependency-groups, direct-urls, more pylock, & key for filter. Benchmarking, property-based testing, 2x faster performance in places! github.com/pypa/packagi...
I've just released nox 2026.04.10, with --usage (full docstrings), auto-ignored `.nox` folder, and several great fixes, like auto-recreating environment if Python symlinks are broken and `-t` selecting tags from all sessions. Enjoy! github.com/wntrblm/nox/...
Great release of pip with 26.0! Colorful --help, --requirements-from-script, --uploaded-prior-to, and all the performance optimization work we did on packaging 26.0! New build environment option, too.
On behalf of the packaging maintainers, I’d like to announce packaging 26.0rc1 is out! Please try it out, as it's a huge release. If you'd like to read about the performance work making this the fastest version of packaging ever, see my post:
iscinumpy.dev/post/packagi...
I've written a post about my experience learning TypeScript and using AI for this year's Advent of Code (after learning Rust the last two years). iscinumpy.dev/post/aoc-2025 Merry Christmas!
cibuildwheel 3.3 out! Fix for docker 29 changing the capitalization of the version output, but also runner customization (for iOS on GHA macos-15), manylinux_2_35 on armv7l, build[uv] support on Android, removed build-system constraints, and more! github.com/pypa/cibuild...
I've just finished uhi 1.0, following boost-histogram 1.6 and hist 2.9, with support for serializing histograms into JSON/ZIP/HDF5. There's also a new testing helper (libraries implementing UHI can get dozens of tests with a few lines), and much more! iscinumpy.dev/post/uhi-1-0/
cibuildwheel π is out! (3.1.4). A few nice things, like --clean-cache, Android fixes, and new versions of things like CPython 3.14rc2. Note for iOS on GHA/Azure, you need macOS-14, Microsoft broke macOS-15 images for iOS (WRT CPython's test runner, anyway) github.com/pypa/cibuild...
PSA: You can't use `pip install -U pip` to upgrade to pip 25.2 on Windows. You have to use `python -m pip install -U pip`. That's always been better, but now the entrypoint scripts were optimized to be faster (I've wanted this for years!), Windows doesn't PIP.EXE modify itself!
NumPy picked it up and released 3.14(t) wheels within hours! (Largely due to the scientific python nightly wheels having them for a long time now!) Time to start producing those 3.14 wheels!
We just released cibuildwheel 3.1, which builds Python 3.14/3.14t wheels by default (with yesterday's RC 1)! Also we added Android support, Pyodide 0.28 (3.13), 32-bit modern manylinux, riscv64 defaults, and beautiful new summaries! github.com/pypa/cibuild...
pybind11 3.0 is out (in time for #scipy2025)! Support for Python 3.14, 3.14t, GraalPy, PyPy 3.11, and iOS have been added. smart-holder merged, native enums, multiphase init, subinterpreters (with per-interp GIL), better typing, C++23, and much more! See iscinumpy.dev/post/pybind1...
I've updated my Python 3.14 post with the new additions in 3.14.0b3: free-threading is no longer experimental, and concurrent.interpreters has been added! I've added a couple of examples: iscinumpy.dev/post/python-...
cibuildwheel 3.0 is out! New support for Python 3.14 (and 3.14t) betas, GraalPy, and iOS! New defaults, new config options, beautiful docs updates, and more! iscinumpy.dev/post/cibuild...
If you are updating for Python π (Python 3.14) and are using argparse, remember to conditionally add `color=True` and, if using choices or subcommands, `suggest_on_error=True`!
The beta is out, so it's time for What's new in Python π: iscinumpy.dev/post/python-... (also it's time to start adding it to CI and adding classifiers if it works!)
The Scientific-Python Development Guide has been updated with SPDX licenses (PEP 639) and dependency-groups (PEP 735)! There's more uv, too; the cookiecutter/copier template now sets up uv everywhere for ultra fast CI. New repo-review checks, too. learn.scientific-python.org/development/...
I've just released nox 2025.05.01 with support for uv 0.7+! Lots of other small fixes and polish. Sorry for the breakage, but uv broke accessing the version of uv without warning. And you need the version of uv to know which method to use to get the version. 🤣
And cliutils.gitlab.io/modern-cmake is updated for 4.0, as usual. :)
I've just released the #Python wheels for today's release of #CMake 4.0! pypi.org/project/cmake/ Remember to set your CMake minimum version to at least 3.5 (3.15 or better preferred) and set a maximum version too (newer CMake follows the policies of the maximum version) #release
Actually, this was postponed till 2026 in 78.0.2, so it's fine for now. (No one reads build warnings, in fact pip hides them by default.) I'll probably add this as a repo-review check.
Another nice workaround anyway, though:
[tool.uv]
exclude-newer = "2025-03-24T00:00:00Z"
If you have an issue with a dependency breaking due to setuptools 78's setup.cfg change, and you use uv, it's just:
[tool.uv]
build-constraint-dependencies = ["setuptools<78"]
to fix. Otherwise:
echo "setuptools<78" > constraints.txt
PIP_CONSTRAINT=constrants.txt pip ...
Scikit-build-core 0.11 is out, with PEP 639 support (license expressions and files), METADATA 2.2+ as the default (supporting faster SDist metadata access for tools like uv), and quite a few smaller additions and expanded configurability. github.com/scikit-build...
New release of CLI11 out, the most powerful C++ CLI parser! Version 2.5 has a new formatter following UNIX standards more closely (help2man support), non-standard "-flag" opt-in support, and fixes and polish. github.com/CLIUtils/CLI...
Just released repo-review 0.12, with support for adding skip reasons to configuration! Also has a new --extend-ignore CLI flag. WASM versions updated to show skip reasons: learn.scientific-python.org/development/...
I just completed all 25 days of Advent of Code 2024 (Rust again this year)! #AdventOfCode adventofcode.com
I've just released cibuildwheel 2.22, with [dependency-groups] (PEP 735) support, a new simpler enable option, experimental manylinux ARMv7l support, and lots of fixes and updates! This is the final release (other than patches) before cibuildwheel 3.0! github.com/pypa/cibuild... #python
